Jack Osbourne and wife Lisa Stelly pose as they arrive at the 20th annual Race to Erase MS benefit gala in Los Angeles, California May 3, 2013. The event raises money to fund research to find a cure for multiple sclerosis. REUTERS/Fred Prouser (UNITED STATES - Tags: ENTERTAINMENT) - RTXZ9TW
Police were called on Jack Osbourne after the star punched his estranged wife's new boyfriend in the head, according to a report.
The reality star, 32, was reportedly left furious when the new man showed up at the home he shares with wife Lisa as he tried to work on rebuilding their relationship.
Lisa filed for divorce in May just months after their third child Minnie was born.
TMZ reports that police went to the home, and a battery report was filed. It added that the boyfriend hasn't pressed charges, and Jack proved uncooperative with the police.
"The Osbournes" star, who is currently working on "Ozzy and Jack's World Detour!" with his dad, is said to be committed to winning Lisa back.
A representative for Jack has yet to comment.
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